NOAA's Richmond/Byrd Field station
NOAA's engineering weather data lists a station named Richmond/Byrd Field, at an elevation of 177 feet. For that station it gives a 1% summer design temperature of 92°F with a mean coincident wet-bulb temperature of 76°F, and a 99% winter design temperature of 18°F. In an average year at Richmond/Byrd Field, NOAA counts about 880 hours with the wet-bulb temperature above 73°F and about 2,161 hours above 67°F.
Mold remediation and the Virginia Consumer Protection Act
Under the Virginia Consumer Protection Act it is a prohibited practice to sell or offer professional mold remediation services on a residential dwelling without holding a mold remediation certification from a nationally or internationally recognized certifying body, and without following the EPA's Mold Remediation in Schools and Commercial Buildings, the ANSI/IICRC S520 standard, or an equivalent ANSI-accredited standard.
A recovery is a string of decisions
Finding mold can feel like one big problem. In practice it breaks into a series of smaller calls, each made at its own point, and each one easier when the one before it is settled. The sections below take those decisions in a workable order and set out what each one turns on.
Decision: has the water stopped?
The other decisions lean on this one. Trace the stain back toward its likely source: a supply or drain line overhead, a toilet or tub seal, a window sill or its flashing, an opening in the roof, a condensate pan that overflows, or rain running toward the foundation. If a supply line is leaking, the valve at the fixture or the main shutoff can slow it for now. Then bring in the trade that fits and ask for a short dated note on what it found and repaired, and whether anything nearby could still be letting water in.
Decision: should I touch the growth myself?
Probably not beyond a careful look. Wiping, brushing or sanding dry growth can lift spores into rooms that were clean, and bleach can add water to a material that needs to dry. What you can do: if the room's circuits are safe, close the windows and run a dehumidifier, pick up standing water, move soaked belongings to a dry room, and keep fans aimed away from the growth. If you go in, wear gloves, goggles and a snug disposable respirator, and keep children and pets elsewhere. Health questions are for your own doctor.
Decision: when do I call the insurer?
Early, and before damaged material leaves the house. Photograph the room from the doorway, each damaged surface close up, and any wet belongings, and start a dated log. Then ask the insurer what your policy says about mold and about the water damage behind it, which records it wants, and whether an adjuster should see the area first.
Decision: who writes the assessment?
The assessment maps where the growth is, how far into walls, floors or ceilings it seems to reach, which moisture source fed it, and what removal and cleaning it recommends. You can ask the remediation company to write it, or ask someone outside the removal crew. Weigh one point: a company that both sizes the job and performs it is setting the size of its own contract. Whoever writes it, ask what mold work that person has done before.
Decision: which company gets the job?
Send the same assessment to more than one remediation company and ask each to price exactly what it says. Put the same questions to each:
- Which mold remediation certification do you hold, which body issued it, and which standard will you follow on this job?
- How will the work area be enclosed, and how will air inside it be filtered and held at negative pressure?
- Which materials come out, and how will they be bagged before they cross the house?
- Can you send proof of liability coverage and workers' compensation?
- Will your own employees do the work, or a subcontractor?
- What does your price leave out, and how are changes handled once a wall is open?
Compare the answers line by line rather than by the bottom number alone.
Decision: is it dry?
Smell alone can mislead. Ask who will take moisture readings, at which marked spots and how often, while dehumidifiers and air movers run in the closed space. Ask what reading the plan treats as dry, and keep a copy of the log as it grows. Treat the drying as finished once the logged readings reach the written target.
Decision: can the wall close?
Ask for a walk-through of the open cavity before insulation or drywall goes back. Look for clean, dry framing with no visible growth, take your own photos, and ask for the final readings signed and dated. If something looks wrong, raise it now, while the wall is still open.
Decision: who puts the room back?
Rebuilding may be a separate contract with a separate company. Ask that contractor which city permits the rebuild needs and who will pull them, and ask for its proof of coverage as well. Share the leak repair note and the final readings so it knows what happened behind the wall.
Decision: what do I keep, and what do I watch?
Keep everything: the repair note, photos, the dated log, the assessment, each bid, the contract, the drying log, the final readings and every invoice, all in one folder.
Then keep a few small habits:
- Leave a hygrometer where you will glance at it.
- Check that bath and kitchen fans vent outdoors and run them through each shower and meal.
- Ask for the condensate line to be flushed at each heating and cooling service.
- Keep downspouts carrying water out away from the foundation.
- Open the sink base and look behind the washer from time to time.